Errors on compiling scripts for Android build

[VasiliiMakarov]

Unity 2019.3.3
When compiling scripts for Android build, 3 errors occurred:

Assets\LiteNetLibTransport\LiteNetLibTransport.cs(242,30): error CS0508: 'LiteNetLibTransport.ClientSend(int, ArraySegment)': return type must be 'void' to match overridden member 'Transport.ClientSend(int, ArraySegment)'

Assets\LiteNetLibTransport\LiteNetLibTransport.cs(321,30): error CS0115: 'LiteNetLibTransport.ServerSend(List, int, ArraySegment)': no suitable method found to override

Assets\LiteNetLibTransport\LiteNetLibTransport.cs(11,18): error CS0534: 'LiteNetLibTransport' does not implement inherited abstract member 'Transport.ServerSend(int, int, ArraySegment)'

Steps:

• import Noble Free Connect from AssetStore;
• import Mirror from AssetStore;
• import Mirror Noble Connect package from Noble folder;
• import LiteNetLibTransport package from Releases (latest is v0.7.1 for now);
• open Noble Connect / Mirror / Examples / NetworkManager / Example Mirror;
• add LiteNetLibTransport to Example Noble Network Manager;
• open Build Settings, switch to Android.

[VasiliiMakarov]

It seems to be caused by #if MIRROR_26_0_OR_NEWER preprocessor directive.
When compiling for Windows, the statement is true, and there are no compilator errors.
When compiling for Android, the statement is false, and it chooses the alternative code which causes compilator errors.

[James-Frowen]

Mirror should automatically add MIRROR_26_0_OR_NEWER as a preprocessor directive to all build types.

You might be able to select android as the target platform then manually add the define to the list in the player settings